Mixed ligand complexes of copper(II), cobalt(II), nickel(II) and zinc(II) with thiocyanate and pyrazole based tetradentate ligand: Syntheses, characterizations and structures

Sadhu, Mehul H.; Solanki, Ankita; Kumar, Sujit Baran

doi:10.1016/j.poly.2015.07.067

Cited by 19 publications

(10 citation statements)

References 40 publications

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“…6 were obtained for the Ni(II) mixed complex studied in this work. They are very similar to those previously reported for the pyrazolyl ligand-Nickel complex [38][39][40] indicating close thermal behavior for these two compounds. The direct and the difference thermogravimetric curves display four thermal events that can be attributed to the complex heated from the room temperature up to 700 °C.…”

Section: Thermal Behaviorsupporting

confidence: 90%

A new mixed pyrazole-diamine/Ni(II) complex, Crystal structure, physicochemical, thermal and antibacterial investigation

Titi

Almutairi

Touzani

et al. 2021

Journal of Molecular Structure

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The new mixed complex {[2Ni(L1) 2 .2Ni(L1)(L2)].2(NO 3 ) 4 .2H 2 O} was obtained from a mixture, under aerobic conditions, of a solution of Ni(NO 3 ) 2 ,6H 2 O and the two diamine pyrazolic ligands L1, N1-((3,5-dimethyl-1H-pyrazol-1-yl)methyl)propane-1,2-diamine, and L2, N2-((3,5-dimethyl-1H-pyrazol-1-yl)-methyl)propane-1,2-diamine. Obtained in very good yield, this complex was identified and characterized by FT-IR, EDX, ultraviolet-visible spectroscopies and single-crystal X-ray diffraction (XRD). The structural peculiarity is that two isomeric forms of molecules C 18 H 36 N 8 Ni have co-crystallized with H 2 O and NO 3 molecular units. The triclinic structure of P1 symmetry is stabilized by the numerous hydrogen bonds that occur in the crystal lattice. The thermal behavior of this Ni(II) complex was studied in an open atmosphere via TG/DTG. The L1, L2 ligands and the Ni(II) complex were evaluated for their antibacterial activity against a series of Gram-negative and Grampositive bacteria.

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Section: Thermal Behaviorsupporting

confidence: 90%

A new mixed pyrazole-diamine/Ni(II) complex, Crystal structure, physicochemical, thermal and antibacterial investigation

Titi

Almutairi

Touzani

et al. 2021

Journal of Molecular Structure

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“…36,37 The optical spectra of complex 1, 2 and 3 matches reasonably well with other reported complexes of high spin Ni(II) in an octahedral geometry. [38][39][40] In The electronic absorption spectra for complex 4, 5 and 6 were recorded in methanol and in acetonitrile ( Figure 6). In acetonitrile, complexes 4 and 6 exhibit a deep blue color due to a strong absorption peak at 624 nm and 626 nm respectively.…”

Section: Optical Spectroscopymentioning

confidence: 99%

Mononuclear nickel (II) and copper (II) coordination complexes supported by bispicen ligand derivatives: Experimental and computational studies

Singh¹,

Niklas²,

Poluektov³

et al. 2017

Inorganica Chimica Acta

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“…The bands indicative at of the d→d electronic transitions appear at 677 and 653 nm, respectively, for the chloride and the thiocyanate copper complexes. These facts are characteristic of a distorted square-pyramidal environment [30].…”

Section: General Studiesmentioning

confidence: 99%

Synthesis, spectroscopic studies and X-ray structure determination of two mononuclear copper complexes derived from the Schiff base ligand N,N-dimethyl-N'-((5-methyl-1H-imidazol-4-yl)methylene)ethane-1,2-diamine

Haba

Tamboura

et al. 2019

Eur J Chem

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Reactions of the Schiff base N,N-dimethyl-N'-((5-methyl-1H-imidazol-4-yl)methylene) ethane-1,2-diamine (HL), synthesised in situ, with chloride or thiocyanate copper (II) salt; afforded two new mononuclear complexes, [Cu(HL)Cl2]·H2O (1) and [Cu(HL)(SCN)2] (2). These compounds have been studied and characterized by elemental analysis, IR and UV-Vis spectroscopies, electrochemistry, molar conductivity and room temperature magnetic measurements. Single crystal X-ray structure determination of the complexes revealed the presence of neutral moieties in the asymmetric unit. The mononuclear (1) crystallises in the monoclinic space group P21/c with the following unit cell parameters a = 7.4355(3) Å, b = 7.2952(3) Å, c = 26.2729(11) Å, β = 93.461(4)°, V = 1422.52(10) Å3, Z = 4, R1 = 0.033 and wR2 = 0.082 and the mononuclear complex (2) crystallises in the monoclinic space group C2/c with the following unit cell parameters a = 26.2578(7) Å, b = 7.4334(2) Å, c = 16.6237(5) Å, β = 99.089(3)°, V = 3203.95(16) Å3, Z = 8, R1 = 0.037 and wR2 = 0.104. In both complexes the ligand acts in tridentate fashion and the coordination environment of the copper atom can be described as distorted square pyramidal. The crystal lattice of the complex 1 is stabilized by electrostatic forces of attraction and O–H···Cl, C–H···O, N–H···Cl, and C–H···Cl, hydrogen bonding interactions while the crystal lattice of the complex 2 is stabilized by N–H···S and C–H···N.

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Mixed ligand complexes of copper(II), cobalt(II), nickel(II) and zinc(II) with thiocyanate and pyrazole based tetradentate ligand: Syntheses, characterizations and structures

Cited by 19 publications

References 40 publications

A new mixed pyrazole-diamine/Ni(II) complex, Crystal structure, physicochemical, thermal and antibacterial investigation

A new mixed pyrazole-diamine/Ni(II) complex, Crystal structure, physicochemical, thermal and antibacterial investigation

Mononuclear nickel (II) and copper (II) coordination complexes supported by bispicen ligand derivatives: Experimental and computational studies

Synthesis, spectroscopic studies and X-ray structure determination of two mononuclear copper complexes derived from the Schiff base ligand N,N-dimethyl-N'-((5-methyl-1H-imidazol-4-yl)methylene)ethane-1,2-diamine

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